System Properties
This section describes the system properties, a type of attribute, that you can set in the STR and in various configuration files.
The system properties that you can set in STR are divided into the following categories:
Cell properties - applicable on a system level
Container properties -Â applicable on a container level
Execution Context properties -Â applicable to ECs
Platform properties - applicable to the Platform instance
Service Context properties - applicable to SCs
High Availability properties - related to high availability
Log properties - related to logging
Database properties  - related to Oracle, PostgreSQL and SAP HANA connections, i.e. to database and external databases.
Desktop properties - default properties for connected DesktopsÂ
The properties set in your system and in each container, after the initial installation, depend on the container type and the installation settings.
Properties that are not defined in the STR are set to their respective default values.
You can configure properties for services that should run on Pico instances, e g SCs. For further information about these properties, see Managing Service Configurations (Removed from User Doc for XE-15203).
For general information about how to set attributes in the STR, see System Topology Registry and Managing Picos with Topo.
This chapter includes the following sections: